To investigate the differences among the Limit Equilibrium Method (LEM), the Finite Element Method (FEM), and the Finite Element Limit Analysis Method (FELAM) in slope stability assessment, a remediation project of a multitiered high loess fill slope reinforced with a combined system of geogrids and frame anchor cables is taken as an example, and corresponding models are established using three numerical simulation software packages: SLOPE/W, PLAXIS 2D, and Optum G2. On the basis of validating the numerical models, a comparative analysis is carried out on the stability of unreinforced slopes, geogrid-reinforced slopes, and slopes reinforced with a combination of geogrids and frame anchor cables under self-weight conditions and rainfall conditions. The results show that the stability assessments obtained from LEM and FELAM are more consistent with each other, whereas the FEM-based results are more conservative than those from both LEM and FELAM. For slope stability evaluation and reinforcement design, a comprehensive analysis integrating multiple methods yields more thorough and reliable assessment outcomes.
TENG Hong-wei
,
ZHANG Guo-hua
,
WANG Hong-wei
,
YANG Xiao-hui
,
HUANG An-ping
. Stability analysis of reinforced multi-stage loess high slope based on limit equilibrium method and finite element methods[J]. Journal of Lanzhou University of Technology, 2026
, 52(4)
: 130
-137
.
DOI: 10.13295/j.cnki.issn1673-5196.2026.04.015
[1] Gao Y H,Zhang Y,Ma C C,et al.Failure process and stability analysis of landslides in Southwest China while considering rainfall and supporting conditions[J].Frontiers in Environmental Science,2023,10:1084151.
[2] Chen Y L,Liu G Y,Li N,et al.Stability evaluation of slope subjected to seismic effect combined with consequent rainfall[J].Engineering Geology,2020,266:105461.
[3] Zhang Y,Jiang H J,Bai G X,et al.Coupling action of rainfall and vehicle loads impact on the stability of loess slopes based on the iso-water content layer[J].Earthquake Research Advances,2022,2(3):100143.
[4] Gao Q F,Zeng L,Shi Z N.Effects of desiccation cracks and vegetation on the shallow stability of a red clay cut slope under rainfall infiltration[J].Computers and Geotechnics,2021,140:104436.
[6] 刘加丽,谢红强,肖明砾,等.重庆某护岸工程桩板墙加固效果研究[J].水电能源科学,2017,35(12):135-139.
[7] Benmebarek S,Djabri M.FEM to investigate the effect of overlapping-reinforcement on the performance of back-to-back embankment bridge approaches under self-weight[J].Transportation Geotechnics,2017,11:17-26.
[8] Xu P,Yang G Q,Li T,et al.Finite element limit analysis of bearing capacity of footing on back-to-back reinforced soil retaining walls[J].Transportation Geotechnics,2021,30:100596.
[9] 朱彦鹏,陶钧,杨校辉,等.框架预应力锚托板结构加固高填方边坡设计与数值分析[J].岩土力学,2020,41(2):612-623.
[10] Wu G Q,Zhang R,Zhao M H,et al.Undrained stability analysis of eccentrically loaded strip footing lying on layered slope by finite element limit analysis[J].Computers and Geotechnics,2020,123:103600.
[11] Villalobos S A,Villalobos F A.Effect of nail spacing on the global stability of soil nailed walls using limit equilibrium and finite element methods[J].Transportation Geotechnics,2021,26:100454.
[12] 袁中夏,李德鹏,叶帅华.地震和降雨条件下黄土高填方边坡稳定性分析[J].兰州理工大学学报,2022,48(4):119-125.
[13] 郑颖人.边坡与滑坡工程治理[M].2版.北京:人民交通出版社,2010.
[14] 黄安平.框架梁锚托板加固非饱和土边坡三维稳定性极限分析[D].兰州:兰州理工大学,2024:121-124.
[15] 王昕宇,钟佩文,张慧莉,等.基于不同失稳判据的黄土边坡稳定性数值计算分析[J].人民黄河,2024,46(3):143-147.
[16] 岳凡,于沭,李炎隆,等.柔性溢洪道边坡稳定性研究[J].人民黄河,2021,43(8):144-147.
[17] GB 5332－2013 建筑边坡工程技术规范[S].
[18] DZ/T 0219－2006 滑坡防沿工程设计与施工技术规范[S].
